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LibJS: Implement (most of) Intl.DateTimeFormat.prototype.format
There are a few FIXMEs that will need to be addressed, but this
implements most of the prototype method. The FIXMEs are mostly related
to range formatting, which has been entirely ignored so far. But other
than that, the following will need to be addressed:
* Determining flexible day periods must be made locale-aware.
* DST will need to be determined and acted upon.
* Time zones other than UTC and calendars other than Gregorian are
ignored.
* Some of our results differ from other engines as they have some
format patterns we do not. For example, they seem to have a lonely
{dayPeriod} pattern, whereas our closest pattern is
"{hour} {dayPeriod}".
This commit is contained in:
Timothy Flynn
Linus Groh
parent
d010ba10c3
commit
adaf5985a4
9 changed files with 977 additions and 8 deletions
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@ -0,0 +1,387 @@
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describe("errors", () => {
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test("called on non-DateTimeFormat object", () => {
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expect(() => {
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Intl.DateTimeFormat.prototype.format;
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}).toThrowWithMessage(TypeError, "Not an object of type Intl.DateTimeFormat");
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expect(() => {
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Intl.DateTimeFormat.prototype.format(1);
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}).toThrowWithMessage(TypeError, "Not an object of type Intl.DateTimeFormat");
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});
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test("called with value that cannot be converted to a number", () => {
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expect(() => {
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Intl.DateTimeFormat().format(Symbol.hasInstance);
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}).toThrowWithMessage(TypeError, "Cannot convert symbol to number");
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expect(() => {
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Intl.DateTimeFormat().format(1n);
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}).toThrowWithMessage(TypeError, "Cannot convert BigInt to number");
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});
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test("time value cannot be clipped", () => {
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expect(() => {
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Intl.DateTimeFormat().format(NaN);
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}).toThrowWithMessage(RangeError, "Time value must be between -8.64E15 and 8.64E15");
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expect(() => {
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Intl.DateTimeFormat().format(-8.65e15);
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}).toThrowWithMessage(RangeError, "Time value must be between -8.64E15 and 8.64E15");
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expect(() => {
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Intl.DateTimeFormat().format(8.65e15);
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}).toThrowWithMessage(RangeError, "Time value must be between -8.64E15 and 8.64E15");
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});
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});
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const d0 = Date.UTC(2021, 11, 7, 17, 40, 50, 456);
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const d1 = Date.UTC(1989, 0, 23, 7, 8, 9, 45);
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describe("dateStyle", () => {
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// prettier-ignore
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const data = [
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{ date: "full", en0: "Tuesday, December 7, 2021", en1: "Monday, January 23, 1989", ar0: "الثلاثاء، ٧ ديسمبر ٢٠٢١", ar1: "الاثنين، ٢٣ يناير ١٩٨٩" },
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{ date: "long", en0: "December 7, 2021", en1: "January 23, 1989", ar0: "٧ ديسمبر ٢٠٢١", ar1: "٢٣ يناير ١٩٨٩" },
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{ date: "medium", en0: "Dec 7, 2021", en1: "Jan 23, 1989", ar0: "٠٧/١٢/٢٠٢١", ar1: "٢٣/٠١/١٩٨٩" },
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{ date: "short", en0: "12/7/21", en1: "1/23/89", ar0: "٧/١٢/٢٠٢١", ar1: "٢٣/١/١٩٨٩" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", { dateStyle: d.date });
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", { dateStyle: d.date });
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("timeStyle", () => {
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// prettier-ignore
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const data = [
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{ time: "full", en0: "5:40:50 PM Coordinated Universal Time", en1: "7:08:09 AM Coordinated Universal Time", ar0: "٥:٤٠:٥٠ م التوقيت العالمي المنسق", ar1: "٧:٠٨:٠٩ ص التوقيت العالمي المنسق" },
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{ time: "long", en0: "5:40:50 PM UTC", en1: "7:08:09 AM UTC", ar0: "٥:٤٠:٥٠ م UTC", ar1: "٧:٠٨:٠٩ ص UTC" },
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{ time: "medium", en0: "5:40:50 PM", en1: "7:08:09 AM", ar0: "٥:٤٠:٥٠ م", ar1: "٧:٠٨:٠٩ ص" },
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{ time: "short", en0: "5:40 PM", en1: "7:08 AM", ar0: "٥:٤٠ م", ar1: "٧:٠٨ ص" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", { timeStyle: d.time, timeZone: "UTC" });
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", { timeStyle: d.time, timeZone: "UTC" });
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("dateStyle + timeStyle", () => {
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// prettier-ignore
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const data = [
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{ date: "full", time: "full", en: "Tuesday, December 7, 2021 at 5:40:50 PM Coordinated Universal Time", ar: "الثلاثاء، ٧ ديسمبر ٢٠٢١ في ٥:٤٠:٥٠ م التوقيت العالمي المنسق" },
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{ date: "full", time: "long", en: "Tuesday, December 7, 2021 at 5:40:50 PM UTC", ar: "الثلاثاء، ٧ ديسمبر ٢٠٢١ في ٥:٤٠:٥٠ م UTC" },
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{ date: "full", time: "medium", en: "Tuesday, December 7, 2021 at 5:40:50 PM", ar: "الثلاثاء، ٧ ديسمبر ٢٠٢١ في ٥:٤٠:٥٠ م" },
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{ date: "full", time: "short", en: "Tuesday, December 7, 2021 at 5:40 PM", ar: "الثلاثاء، ٧ ديسمبر ٢٠٢١ في ٥:٤٠ م" },
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{ date: "long", time: "full", en: "December 7, 2021 at 5:40:50 PM Coordinated Universal Time", ar: "٧ ديسمبر ٢٠٢١ في ٥:٤٠:٥٠ م التوقيت العالمي المنسق" },
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{ date: "long", time: "long", en: "December 7, 2021 at 5:40:50 PM UTC", ar: "٧ ديسمبر ٢٠٢١ في ٥:٤٠:٥٠ م UTC" },
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{ date: "long", time: "medium", en: "December 7, 2021 at 5:40:50 PM", ar: "٧ ديسمبر ٢٠٢١ في ٥:٤٠:٥٠ م" },
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{ date: "long", time: "short", en: "December 7, 2021 at 5:40 PM", ar: "٧ ديسمبر ٢٠٢١ في ٥:٤٠ م" },
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{ date: "medium", time: "full", en: "Dec 7, 2021, 5:40:50 PM Coordinated Universal Time", ar: "٠٧/١٢/٢٠٢١, ٥:٤٠:٥٠ م التوقيت العالمي المنسق" },
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{ date: "medium", time: "long", en: "Dec 7, 2021, 5:40:50 PM UTC", ar: "٠٧/١٢/٢٠٢١, ٥:٤٠:٥٠ م UTC" },
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{ date: "medium", time: "medium", en: "Dec 7, 2021, 5:40:50 PM", ar: "٠٧/١٢/٢٠٢١, ٥:٤٠:٥٠ م" },
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{ date: "medium", time: "short", en: "Dec 7, 2021, 5:40 PM", ar: "٠٧/١٢/٢٠٢١, ٥:٤٠ م" },
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{ date: "short", time: "full", en: "12/7/21, 5:40:50 PM Coordinated Universal Time", ar: "٧/١٢/٢٠٢١, ٥:٤٠:٥٠ م التوقيت العالمي المنسق" },
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{ date: "short", time: "long", en: "12/7/21, 5:40:50 PM UTC", ar: "٧/١٢/٢٠٢١, ٥:٤٠:٥٠ م UTC" },
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{ date: "short", time: "medium", en: "12/7/21, 5:40:50 PM", ar: "٧/١٢/٢٠٢١, ٥:٤٠:٥٠ م" },
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{ date: "short", time: "short", en: "12/7/21, 5:40 PM", ar: "٧/١٢/٢٠٢١, ٥:٤٠ م" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", {
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dateStyle: d.date,
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timeStyle: d.time,
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timeZone: "UTC",
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});
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expect(en.format(d0)).toBe(d.en);
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const ar = new Intl.DateTimeFormat("ar", {
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dateStyle: d.date,
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timeStyle: d.time,
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timeZone: "UTC",
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});
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expect(ar.format(d0)).toBe(d.ar);
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});
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});
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});
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describe("weekday", () => {
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// prettier-ignore
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const data = [
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{ weekday: "narrow", en0: "T", en1: "M", ar0: "ث", ar1: "ن" },
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{ weekday: "short", en0: "Tue", en1: "Mon", ar0: "الثلاثاء", ar1: "الاثنين" },
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{ weekday: "long", en0: "Tuesday", en1: "Monday", ar0: "الثلاثاء", ar1: "الاثنين" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", { weekday: d.weekday });
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", { weekday: d.weekday });
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("era", () => {
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// prettier-ignore
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const data = [
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{ era: "narrow", en0: "12/7/2021 A", en1: "1/23/1989 A", ar0: "٧ ١٢ ٢٠٢١ م", ar1: "٢٣ ١ ١٩٨٩ م" },
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{ era: "short", en0: "12/7/2021 AD", en1: "1/23/1989 AD", ar0: "٧ ١٢ ٢٠٢١ م", ar1: "٢٣ ١ ١٩٨٩ م" },
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{ era: "long", en0: "12/7/2021 Anno Domini", en1: "1/23/1989 Anno Domini", ar0: "٧ ١٢ ٢٠٢١ ميلادي", ar1: "٢٣ ١ ١٩٨٩ ميلادي" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", { era: d.era });
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", { era: d.era });
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("year", () => {
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// prettier-ignore
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const data = [
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{ year: "2-digit", en0: "21", en1: "89", ar0: "٢١", ar1: "٨٩" },
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{ year: "numeric", en0: "2021", en1: "1989", ar0: "٢٠٢١", ar1: "١٩٨٩" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", { year: d.year });
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", { year: d.year });
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("month", () => {
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// prettier-ignore
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const data = [
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{ month: "2-digit", en0: "12", en1: "01", ar0: "١٢", ar1: "٠١" },
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{ month: "numeric", en0: "12", en1: "1", ar0: "١٢", ar1: "١" },
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{ month: "narrow", en0: "D", en1: "J", ar0: "د", ar1: "ي" },
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{ month: "short", en0: "Dec", en1: "Jan", ar0: "ديسمبر", ar1: "يناير" },
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{ month: "long", en0: "December", en1: "January", ar0: "ديسمبر", ar1: "يناير" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", { month: d.month });
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", { month: d.month });
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("day", () => {
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// prettier-ignore
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const data = [
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{ day: "2-digit", en0: "07", en1: "23", ar0: "٠٧", ar1: "٢٣" },
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{ day: "numeric", en0: "7", en1: "23", ar0: "٧", ar1: "٢٣" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", { day: d.day });
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", { day: d.day });
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("dayPeriod", () => {
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// prettier-ignore
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// FIXME: The ar formats aren't entirely correct. LibUnicode is only parsing e.g. "morning1" in the "dayPeriods"
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// CLDR object. It will need to parse "morning2", and figure out how to apply it.
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const data = [
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{ dayPeriod: "narrow", en0: "5 in the afternoon", en1: "7 in the morning", ar0: "٥ ظهرًا", ar1: "٧ فجرًا" },
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{ dayPeriod: "short", en0: "5 in the afternoon", en1: "7 in the morning", ar0: "٥ ظهرًا", ar1: "٧ فجرًا" },
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{ dayPeriod: "long", en0: "5 in the afternoon", en1: "7 in the morning", ar0: "٥ ظهرًا", ar1: "٧ في الصباح" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", {
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dayPeriod: d.dayPeriod,
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hour: "numeric",
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timeZone: "UTC",
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});
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", {
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dayPeriod: d.dayPeriod,
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hour: "numeric",
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timeZone: "UTC",
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});
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("hour", () => {
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// prettier-ignore
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// FIXME: The 2-digit results are supposed to include {ampm}. These results are acheived from the "HH"
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// pattern, which should only be applied to 24-hour cycles.
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const data = [
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{ hour: "2-digit", en0: "05", en1: "07", ar0: "٠٥", ar1: "٠٧" },
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{ hour: "numeric", en0: "5 PM", en1: "7 AM", ar0: "٥ م", ar1: "٧ ص" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", { hour: d.hour, timeZone: "UTC" });
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", { hour: d.hour, timeZone: "UTC" });
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("minute", () => {
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// prettier-ignore
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const data = [
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{ minute: "2-digit", en0: "5:40 PM", en1: "7:08 AM", ar0: "٥:٤٠ م", ar1: "٧:٠٨ ص" },
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{ minute: "numeric", en0: "5:40 PM", en1: "7:08 AM", ar0: "٥:٤٠ م", ar1: "٧:٠٨ ص" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", {
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minute: d.minute,
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hour: "numeric",
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timeZone: "UTC",
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});
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", {
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minute: d.minute,
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hour: "numeric",
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timeZone: "UTC",
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});
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expect(ar.format(d0)).toBe(d.ar0);
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expect(ar.format(d1)).toBe(d.ar1);
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});
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});
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});
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describe("second", () => {
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// prettier-ignore
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const data = [
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{ second: "2-digit", en0: "40:50", en1: "08:09", ar0: "٤٠:٥٠", ar1: "٠٨:٠٩" },
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{ second: "numeric", en0: "40:50", en1: "08:09", ar0: "٤٠:٥٠", ar1: "٠٨:٠٩" },
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];
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test("all", () => {
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data.forEach(d => {
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const en = new Intl.DateTimeFormat("en", {
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second: d.second,
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minute: "numeric",
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timeZone: "UTC",
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});
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expect(en.format(d0)).toBe(d.en0);
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expect(en.format(d1)).toBe(d.en1);
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const ar = new Intl.DateTimeFormat("ar", {
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second: d.second,
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||||
minute: "numeric",
|
||||
timeZone: "UTC",
|
||||
});
|
||||
expect(ar.format(d0)).toBe(d.ar0);
|
||||
expect(ar.format(d1)).toBe(d.ar1);
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
describe("fractionalSecondDigits", () => {
|
||||
// prettier-ignore
|
||||
const data = [
|
||||
{ fractionalSecondDigits: 1, en0: "40:50.4", en1: "08:09.0", ar0: "٤٠:٥٠٫٤", ar1: "٠٨:٠٩٫٠" },
|
||||
{ fractionalSecondDigits: 2, en0: "40:50.45", en1: "08:09.04", ar0: "٤٠:٥٠٫٤٥", ar1: "٠٨:٠٩٫٠٤" },
|
||||
{ fractionalSecondDigits: 3, en0: "40:50.456", en1: "08:09.045", ar0: "٤٠:٥٠٫٤٥٦", ar1: "٠٨:٠٩٫٠٤٥" },
|
||||
];
|
||||
|
||||
test("all", () => {
|
||||
data.forEach(d => {
|
||||
const en = new Intl.DateTimeFormat("en", {
|
||||
fractionalSecondDigits: d.fractionalSecondDigits,
|
||||
second: "numeric",
|
||||
minute: "numeric",
|
||||
timeZone: "UTC",
|
||||
});
|
||||
expect(en.format(d0)).toBe(d.en0);
|
||||
expect(en.format(d1)).toBe(d.en1);
|
||||
|
||||
const ar = new Intl.DateTimeFormat("ar", {
|
||||
fractionalSecondDigits: d.fractionalSecondDigits,
|
||||
second: "numeric",
|
||||
minute: "numeric",
|
||||
timeZone: "UTC",
|
||||
});
|
||||
expect(ar.format(d0)).toBe(d.ar0);
|
||||
expect(ar.format(d1)).toBe(d.ar1);
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
describe("timeZoneName", () => {
|
||||
// prettier-ignore
|
||||
const data = [
|
||||
{ timeZoneName: "short", en0: "12/7/2021, 5:40 PM UTC", en1: "1/23/1989, 7:08 AM UTC", ar0: "٧/١٢/٢٠٢١, ٥:٤٠ م UTC", ar1: "٢٣/١/١٩٨٩, ٧:٠٨ ص UTC" },
|
||||
{ timeZoneName: "long", en0: "12/7/2021, 5:40 PM Coordinated Universal Time", en1: "1/23/1989, 7:08 AM Coordinated Universal Time", ar0: "٧/١٢/٢٠٢١, ٥:٤٠ م التوقيت العالمي المنسق", ar1: "٢٣/١/١٩٨٩, ٧:٠٨ ص التوقيت العالمي المنسق" },
|
||||
];
|
||||
|
||||
test("all", () => {
|
||||
data.forEach(d => {
|
||||
const en = new Intl.DateTimeFormat("en", { timeZoneName: d.timeZoneName });
|
||||
expect(en.format(d0)).toBe(d.en0);
|
||||
expect(en.format(d1)).toBe(d.en1);
|
||||
|
||||
const ar = new Intl.DateTimeFormat("ar", { timeZoneName: d.timeZoneName });
|
||||
expect(ar.format(d0)).toBe(d.ar0);
|
||||
expect(ar.format(d1)).toBe(d.ar1);
|
||||
});
|
||||
});
|
||||
});
|
||||
Loading…
Add table
Add a link
Reference in a new issue